ASTROSAT CZTI

Data Quality Report

Orbit 13174

Creation date: 2024-06-27T16:37:13.420400
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G08_034T01_9000001944_13174cztM0_level2.evt modeM0/AS1G08_034T01_9000001944_13174cztM0_level2_quad_clean.evt
Size (bytes)923,028,480177,753,600
Size880.3 MB 169.5 MB
Events in quadrant A6,647,1121,110,569
Events in quadrant B7,878,1221,128,684
Events in quadrant C6,104,5851,141,030
Events in quadrant D6,415,7001,076,868

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350616383
B0407478346
C0339086169
D0351306646

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033757
B033965
C034270
D034068

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332
B0343
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A134071300.969643%
B133646174.616881%
C13461600.445732%
D13379890.665222%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 19700 13864 2 2 0.01% 0.01%
B 19700 13771 326 326 1.65% 2.37%
C 19700 13929 6 6 0.03% 0.04%
D 19700 13827 14 14 0.07% 0.10%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 189 413514 1291.62 1592 1561 318.9
A 0 23 36015 108.03 1592 1561 318.9
A 1 162 35833 107.45 1592 1561 318.9
B 4 239 1378768 4663.04 1568 1532 295.4
B 0 230 116481 389.19 1568 1532 295.4
B 5 32 64674 213.78 1568 1532 295.4
C 15 208 48104 130.21 1552 1559 357.5
C 13 61 11399 27.53 1552 1559 357.5
C 8 128 5722 11.65 1552 1559 357.5
D 8 195 309945 849.97 1525 1484 362.9
D 1 52 148320 404.61 1525 1484 362.9
D 2 234 69957 188.68 1525 1484 362.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter